Newsweek or Google Republish Old Article (formerly Cliff Stoll Can’t Use Google)

ETA: This article was originally published in 1995, as Alter points out, which makes it much more reasonable. It popped up in my Google toolbar, so I can’t tell if the toolbar dredged it out of the archive, or if Newsweek republished it more recently.  Not sure what search engine I was using in 1995, or what all content was out there. I should have been suspicious at the lack of abuse of Wikipedia, I suppose.

Cliff Stoll, in a column in Newsweek, says “Logged onto the World Wide Web, I hunt for the date of the Battle of Trafalgar. Hundreds of files show up, and it takes 15 minutes to unravel them–one’s a biography written by an eighth grader, the second is a computer game that doesn’t work and the third is an image of a London monument. None answers my question, and my search is periodically interrupted by messages like, “Too many connectios, try again later.””

He’s always been a bit of an Internet-skeptic, and a good portion of the points he makes are clearly true.  But this one was so far over the top I couldn’t stand it.

See, I tried a quick web search.  The most obvious one.  I entered “battle of Trafalgar date” (no quotes) into the Google search box.  And in less than one second got a clear-cut answer, without even following through any of the links.  With enough information to validate the information for most purposes (remembering that encyclopedias contain nonsense sometimes too).

Google results for Battle of Trafalgar date
Google results for Battle of Trafalgar date

So, the first line gives the desired answer.  A couple of other lines give visible confirmation. And if you want to go to extra trouble to check an authoritative source, #5 there is the UK National Archives, which ought to be sufficiently authoritative for most purposes.

So, what’s his problem?  Does he actually believe everything he reads in a newspaper, or even in a peer-reviewed astronomical journal? Has something made him completely incapable of performing basic sanity-checks on data when it comes out of his computer?

I’m thinking that teaching people to distrust single-sourced data is going to make people better researchers, and get rid of some of the stupid misinformation that circulates so widely, when it gets deeply enough into the population.

I believe Cliff is younger than I am, but he sounds like somebody who came to the Internet late and just doesn’t relate to the paradigm.  I got to it early and was instantly at home.  So his writing on the topic grates on me sometimes.  To the extent that he’s pointing out real problems that I’m prone to gloss over, that’s a good thing, but it would be better if he avoided exaggerations of this magnitude.

VR Tests, Pass 3 Part 2: Not Impressed

I’m looking for expert opinion, but my current conclusion is that my lens is broken. I’m supposed to get a 3-stop increase in handholdability from VR on this lens, and I don’t get anything like that. I still want comments on whether I’m being unreasonable about what I categorize as “critically sharp”. I think I’m being somewhat lax, myself; if it looks good at 1:1 I’ll call it critically sharp, and not inquire further.

So, here’s a set of carefully-shot tests, at increasing shutter speeds. Each setting I shot 10 times; then I rested for at least 5 minutes before resuming (I don’t think my arms and hands are really that shaky, but I was trying to give the lens every chance). I was using aperture priority, and adjusting the ISO, so I didn’t really get 10 shots the same each time; apparently I was too close to a boundary, so I got some at one shutter speed and some at another. They’re named and categorized based on the shutter speed recorded in the EXIF data. All test shots are at 200mm and f/5.6. The camera is the Nikon D700. The lens is the Nikkor 70-200/2.8 VR AF-S G. Click through to see the 100% crop of the center of the frame for each test. See the tripod results (showing what really sharp results look like, and what the full frame looks like before cropping down to just the center) here.

At 1/15 VR off: Good 0, marginal 1 (#1), bad 0.

1/15 VR on: Good 1 (#2), marginal 2 (#3,4), bad 1 (#1).

1/20 VR off: Good 2 (#2,7), marginal 0, bad 6 (#1,3,4,5,6,8).

1/20 VR on: Good 1 (#6), marginal 3(#1,3,5), bad 2(#2,4).

1/30 VR on: Good 0, marginal 3(#1,2,3), bad 0.

1/40 VR off: Good 1 (#4), marginal 0, bad 9 (#1,2,3,5,6,7,8,9,10).

1/40 VR on: Good 0, marginal 5(#1,2,4,6,7), bad 2(#3,5).

1/60 VR off: Good 1(#2), marginal 3(#6,7,9), bad 5(#1,3,4,5,8).

1/60 VR on: Good 0, marginal 0, bad 3(#1,2,3).

1/80 VR off: Good 0, marginal 0, bad 1(#1).

1/80 VR on: Good 2(#2,5), marginal 1(#3), bad 3(#1,4,6,7).

1/125 VR off: Good 1(#1), marginal 0, bad 0.

1/160 VR off: Good 1(#6), marginal 4(#1,7,8,9), bad 4(#2,3,4,5).

1/160 VR on: Good 8(#2,4,5,6,7,8,9,10), marginal 1(#3), bad 1(#1).

Once again, I get a surprising proportion (i.e. greater than 0) of usable shots at 1/20 and 1/40 seconds without VR. I wasn’t leaning on anything, sitting, resting my arms on anything; I was standing up all by myself, and holding the camera in my own two hands. And I get very little improvement in sharp shots, few critically sharp shots, when VR is turned on.

Anybody else with this lens, do you get better VR results than this? Is mine broken?

Notes for future testing: Target is good.  Procedure (with rest) is good. Need to use manual exposure. Need to have more light, so I can try some higher shutter speeds.

Continue reading VR Tests, Pass 3 Part 2: Not Impressed

VR Tests, Pass 3, Part 1: The Manual is Right

Yes, this topic has been annoying me quite a bit; why do you ask?

I was doing a set of tripod-based tests tonight, under the conditions I’ve established for the planned hand-held series, to produce example of just how sharp this target should look through this lens. (One of the questions last time was whether I was expecting too much sharpness.)

I was shooting very carefully, doing nearly everything I could to eliminate sources of vibration: tripod, LiveView mode (so the mirror was up), remote release (so my touching the body didn’t introduce any vibrations), contrast-detection focus (so any alignment issues in the other AF system won’t cause focus errors).

I shot 5 copies of each test case; each group of 5 looks substantially the same, indicating that my procedures were at least consistent from shot to shot.

Here’s one of the full frames, reduced to a sensible jpeg size, to give you an idea of what the setup was. All the images after this will be 100% crops from the center when you click through the thumbnail.

Full frame of 1/13sec VR off exposure
Full frame of 1/13sec VR off exposure

First, here are 100% crops from a few shots without VR at various ISOs and shutter speeds:

VR off, 1.30sec
VR off, 1.30sec
VR off, 1/25sec
VR off, 1/25sec
VR off, 1/13sec.
VR off, 1/13sec.

Now, here are 100% crops from a few shots with VR at the one ISO (Lo.1) and shutter speed (1.30sec) I tested:

VR On, 1.30sec
VR On, 1.30sec
VR on, 1.30sec
VR on, 1.30sec
VR on, 1.30sec
VR on, 1.30sec

That, as the saying goes, is just not right.

The manual says to NOT use VR on a tripod. Based on this step of the experiment, I have to say that the manual is definitely right on this one! (The manuals for various generations of Nikon VR give different answers to whether it should be used on a tripod. I checked the manual for this specific lens, and it definitely says not to use VR on a tripod. They’re right!)

So, some day soon, the rest of the test, actual hand-held shots with VR on and off, using this same target.